Diana Sharrer :
Even a small imperfection in the cavity like a slight dip, rough spot, or uneven curvature can change how the sound waves behave inside. Instead of all the energy focusing cleanly at the center, that imperfection can redirect or concentrate energy in one area, almost like creating a secondary “hot spot.” This can lead to a few issues: first, increased mechanical stress at that exact location, making it more prone to cracking; second, localized cavitation or bubble activity happening near the wall instead of the center; and third, small pockets of heat or energy buildup that can wear down or damage the surface over time. So even tiny flaws in the shape or finish can have a much bigger impact than expected in a system that relies on precise resonance.
Once the cavity is cracked, it’s no longer behaving like the same system it was designed to be. The crack changes how the sound waves move and reflect inside, so even if it still resonates, the energy can become uneven or shift toward that damaged area instead of the center. You might be able to adjust the frequency and improve things a bit, but the crack will still influence the behavior and can continue to concentrate stress there. In most cases, it becomes part of the system rather than something you can fully “tune past,” so it can lead to less stable performance or further damage over time.
Another approach that might be worth exploring is sweeping or ramping the frequency instead of holding it steady at 95 kHz. By gradually increasing up to that point and then back down, you’re effectively creating a dynamic waveform rather than a single fixed tone. That can help reveal where the system naturally “locks in” most efficiently, but it also introduces another layer to consider because the ramp itself acts like a modulation, you’re essentially creating a frequency within a frequency. That can change how energy builds and distributes in the chamber, sometimes helping stabilize the system, but it can also introduce additional patterns or hotspots that would need to be accounted for when tuning and modeling the behavior. Just an idea
2026-03-24 04:27:22